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https://bugzilla.mozilla.org/show_bug.cgi?id=1104732
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  <meta charset="utf-8">
  <title>Test for Bug 1104732</title>
  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
  <script type="application/javascript">

  /** Test for Bug 1104732 **/

  // Expected order of the values of the "state" variable:
  // Test starting
  // defer
  // DOMContentLoaded
  // load

  // In the meantime, the async script load should happen before load.
  // Ideally, we would want to assert that it happens after DOMContentLoaded,
  // because it shouldn't be holding up DOMContentLoaded, but there is
  // no *guarantee* that this is the case, so we cannot assert it.

  var state = "Test starting";
  var asyncState = "not loaded";
  SimpleTest.waitForExplicitFinish();
  is(document.readyState, "loading", "Document should have been loading.");
  document.addEventListener("DOMContentLoaded", function () {
    is(document.readyState, "interactive", "readyState should be interactive during DOMContentLoaded.");
    is(state, "defer", "Bad state upon DOMContentLoaded");
    state = "DOMContentLoaded";
    // This doesn't work (see above), but we can't "todo" this assertion either, because
    // it will sometimes be the case...
    // isnot(asyncState, "loaded", "Async script should not have delayed domcontentloaded");
  });
  window.addEventListener("load", function () {
    is(document.readyState, "complete", "readyState should be complete during load.");
    is(state, "DOMContentLoaded", "Bad state upon load")
    state = "load";
    is(asyncState, "loaded", "Async script should be loaded upon document load event");
    SimpleTest.finish();
  });
  </script>
  <script defer src="file_defer_bug1104732.js"></script>
  <script async src="file_async_bug1104732.sjs"></script>
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<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1104732">Mozilla Bug 1104732</a>
<p id="display"></p>
<div id="content" style="display: none">

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<pre id="test">
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